The Effect of Dissolved Ozone on the Corrosion Behavior of Monel 400, Monel K-500, CDA 706, and CDA 715 in Seawater

reportActive / Technical Report | Accession Number: ADA356612 | Open PDF

Abstract:

Ozone is being considered as an alternative to chlorine based biocides for use in marine heat exchange systems. Ozone has several advantages over chlorine based biocides including stronger oxidizing power, the ability to be produced on site, and degradation to oxygen. Before ozone is used in heat exchange systems it is important to understand its impact on the corrosion behavior of the metals used in these systems. Two separate studies were carried out the first at the Corrosion Lab, Rensselaer Polytechnic Institute in Troy, NY comparing ozonated and aerated seawater for thirty, sixty, and ninety days, and the second, at the LaQue Center for Corrosion Technology, Inc. in Wrightsville Beach, N.C. which compared ozonated and chlorinated seawater environments for sixty days. Electrochemical experiments were performed and compared with crevice coupon immersion tests to determine effects of dissolved ozone on the corrosion behavior of Monel 400, Monel K-500, 90Cu10Ni CDA 706, and 70Cu30Ni CDA 715. Studies in-lab correctly predicted the morphology of crevice corrosion in ozonated seawater but, did not predict the extent of corrosion seen in the North Carolina tests.

Author(s):
Stevens, J. H. ; Duquette, D. J.
Author Organization(s):
RENSSELAER POLYTECHNIC INST TROY NY DEPT OF MATERIALS ENGINEERING
Descriptive Note:
Technical rept. Mar-Oct 98
Pagination:
0166

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-5
Contract/Grant Number(s):
N00014-94-1-0093
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_JCA_4.1.2_Sustain the Force; JCA_4.1_Deployment and Distribution; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.4.1_Secure Information Exchange; JCA_6.4_Information Assurance; JCA_6_Net Centric
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*SEA WATER CORROSION, *COPPER NICKEL ALLOYS, *MONEL METAL, HEAT TRANSFER, STAINLESS STEEL, LIQUID IMMERSION TESTS, OZONE, BIOCIDES
Field(s)/Group(s):
Properties of Metals and Alloys, Marine Engineering
Keyword(s):
MONEL 400, MONEL K 500, CDA 706, CDA 715
Report Date:
1998 Oct 29
Creation Date:
1998 Dec 09